Page 2097 of 4323

I18633
D22
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1895
2089 Author: Date:
2005 SEQUOIA (RM1146U) CLTB (*1) ± GND1
(B6±4 ± B6±6)
R±G ± W±BAutomatic light control sen-
sor (IG)Ignition switch OFFBelow 1 V
CLTB (*1) ± GND1
(B6±4 ± B6±6)R±G ± W±BAutomatic light control sen-
sor (IG)Ignition switch ON10 to 14 V
(*1): w/ Automatic Light Control
If the result is not as specified, there may be a malfunction on the wire harness side.
2. CHECK DRIVER DOOR ECU
(a) Disconnect the D22 ECU connector.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
SIG (D22±21) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
CPUB (D22±23) ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
MPX1 (D22±20) ± Body groundG±B ±
Body groundMPX lineAlways10 kW or higher
MPX2 (D22±8) ± Body groundW±L ±
Body groundMPX lineAlways10 kW or higher
BDR (D22±25) ± Body groundL±W ±
Body ground+B (BATT) power supplyAlways10 to 14 V
GND (D22±13) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2098 of 4323
I18633
F18
w/ Driving Position Memory: DI±1896
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2090 Author: Date:
2005 SEQUOIA (RM1146U)
3. CHECK FRONT PASSENGER DOOR ECU
(a) Disconnect the F18 ECU connector.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
SIG (F18±21) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
BDR (F18±25) ± Body groundL±Y ±
Body ground+B (BATT) power supplyAlways10 to 14 V
MPX1 (F18±20) ± Body groundB ± Body groundMPX lineAlways10 kW or higher
MPX2 (F18±8) ± Body groundG±B ±
Body groundMPX lineAlways10 kW or higher
CPUB (F18±23) ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
GND (F18±13) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2099 of 4323
I18630
F18
w/o Driving Position Memory:
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1897
2091 Author: Date:
2005 SEQUOIA (RM1146U)
(a) Disconnect the F18 ECU connector.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
SIG (F18±19) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
BDR (F18±20) ± Body groundL±Y ±
Body ground+B (BATT) power supplyAlways10 to 14 V
MPX1 (F18±10) ± Body groundB ± Body groundMPX lineAlways10 kW or higher
MPX2 (F18±11) ± Body groundG±B ±
Body groundMPX lineAlways10 kW or higher
CPUB (F18±12) ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
GND (F18±8) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2100 of 4323
I18632
S19
DI±1898
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2092 Author: Date:
2005 SEQUOIA (RM1146U)
4. CHECK SLIDING ROOF ECU
(a) Disconnect the S19 ECU connector.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
IG (S19±8) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
B (S19±5) ± Body groundL±W ±
Body ground+B (BATT) power supplyAlways10 to 14 V
MPX1 (S19±2) ± Body groundG±O ±
Body groundMPX lineAlways10 kW or higher
E (S19±7) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2101 of 4323
I18627
B11
B10
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1899
2093 Author: Date:
2005 SEQUOIA (RM1146U)
5. CHECK BACK DOOR ECU
(a) Disconnect the B10 and B11 ECU connectors.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
MPX2 (B11±1) ± Body groundB ± Body groundMPX lineAlways10 kW or higher
MPX1 (B11±2) ± Body groundLG±R ±
Body groundMPX lineAlways10 kW or higher
GND (B11±3) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
BDR (B11±4) ± Body groundL±W ±
Body ground+B (BATT) power supplyAlways10 to 14 V
BECU (B11±5) ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
SIG (B11±6) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2102 of 4323
I27703
C5
C6
DI±1900
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2094 Author: Date:
2005 SEQUOIA (RM1146U)
6. CHECK COMBINATION METER
(a) Disconnect the C5 and C6 meter connectors.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Terminals No.Wiring ColorTerminal DescriptionConditionSpecified Condition
C6±24 ± Body groundB±O ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
C6±23 ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
C5±30 ± Body groundW ± Body groundMPX lineAlways10 kW or higher
C5±31 ± Body groundLG±R ±
Body groundMPX lineAlways10 kW or higher
C5±32 ± Body groundLG±B ±
Body groundMPX lineAlways10 kW or higher
C6±12 ± Body groundBR ±
Body groundGroundAlwaysBelow 1 W
C5±28 ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2103 of 4323
I27716
M7
M6
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1901
2095 Author: Date:
2005 SEQUOIA (RM1146U)
7. CHECK MEMORY SEAT ECU & SWITCH (w/ Driving Position Memory)
(a) Disconnect the M6 and M7 ECU connectors.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
MPX1 (M6±1) ± Body groundW ± Body groundMPX lineAlways10 kW or higher
IG (M6±4) ± Body groundB±R ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
SYSB (M6±8) ± Body groundW±R ±
Body ground+B (BATT) power supplyAlways10 to 14 V
GND (M7±1) ± Body groundW±B ±
Body groundGroundAlwaysBelow 1 W
+B (M7±5) ± Body groundL±O ±
Body ground+B (BATT) power supplyAlways10 to 14 V
If the result is not as specified, there may be a malfunction on the wire harness side.
Page 2104 of 4323
I15876
I19I20I21I22
DI±1902
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2096 Author: Date:
2005 SEQUOIA (RM1146U)
8. CHECK A/C ECU (INTEGRATION CONTROL AND PANEL)
(a) Disconnect the I19 ECU connector.
(b) Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
+B (I19±1) ± Body groundR ± Body ground+B (BATT) power supplyAlways10 to 14 V
IG+ (I19±2) ± Body groundR±L ±
Body groundIgnition power supplyIgnition switch ON10 to 14 V
ACC (I19±11) ± Body groundP ± Body groundACC power supplyIgnition switch ACC10 to 14 V
MPX+ (I19±3) ± Body groundL±Y ±
Body groundMPX lineAlways10 kW or higher
MPX± (I19±13) ± Body groundLG±B ±
Body groundMPX lineAlways10 kW or higher
GND (I19±10) ± Body groundO ± Body groundGroundAlwaysBelow 1 W
If the result is not as specified, there may be a malfunction on the wire harness side.